While 840 numbers are issued to new subscribers, those with 909 numbers retain them. A permissive dialing period was implemented from July 2020 to January 2021. On July 23, 2019, the California Public Utilities Commission approved an all-service overlay for area code 909 with the new area code 840, since February 23, 2021. In the meantime, number pooling was introduced, making the 752 overlay unnecessary, and 752 was returned to the NANPA numbering pool to be assigned at a later date. However, lawsuits filed by the wireless industry in order to prevent California (and other states) from creating wireless-only area codes (after the creation of area code 917 in New York City), which would have identified all customers with certain area codes as being wireless, put all overlays in California on hold for years. Originally on the same date that 951 was split from 909, the geographic area retaining the 909 area code was to be overlaid by a new area code 752. 909 still covers small portions of Corona, Riverside, Moreno Valley, and the entire city of Calimesa which are in Riverside County. Western Riverside County was split off from 909 into area code 951 on July 17, 2004. By August 1993, dialing of the area code became mandatory. state of California.Īrea code 909 was split from area code 714 on November 14, 1992. Area codes 840 and 909 are shown in red.Īrea codes 909 and 840 are telephone area codes in the North American Numbering Plan (NANP) for the far-eastern part of Los Angeles County and southwestern San Bernardino County in the U.S. Numbering plan areas in California (blue) and border states.
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